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PATENTED. JAN 71868 grits h germ gaunt @ffirr.

WILLIAM C. GRISWOLD, OF NEW YORK, N. Y.

Letters Patent No. 72,998, dated Janaaryv'i, 1868.

IMPROVEMENT IN HAT-BLOCKING MACHINES.

Be'it known that I, WILLIAM GRISWOLD, of the city, county, and State ofNew York, have invented a new and useful Improvement in Hat-BlockingMachines, of which the following is a full and clear description,

reference being had to the annexed drawings, of which- Figure 1 is avertical section through the centre of the machine, and

Figure 2 a plan view of the clamps, the ring to which said clamps arehinged, and of the ring for raising the clamps. I

My invention is an improvement calculated to simplify, the mechanismfor-breaking the band, and it consists in resting the ring A, to whichthe'clamps are hinged, upon-spiral springs 'c,-which surround the threev osts 01, which support said ring A. When the lever .Z and itsband-ring n is lowered down upon the hatbody, on the machine, and theclamps b raised up to a horizontal position by means of ring In, thecrown and the brim of the hat are stretched, but the band is notsufliciently broken; andito effect this the lever l and band-ring n areforced down still lower, and, as'thering A rests upon springs, it iscapable of yielding downward with the motion of said band-ring n. Thering it, which keeps the clamps up in a horizontal position, must alsoyield, with the whole system of band-ring clamps, 8:0. I

Having now fully described myinvention, what I claim therein, is- I Thering A, to which the clamps are hinged when elastically seated,substantially as and for the purpose specified.

W; G. GRISWOLD.

Witnesses:

ALBERT H. H0011, SETH M. ELDREDGE.

